Dont worry and you’ve got the option to find multiple ways to fix this issue.
Besides, a third-party backup software fromMiniToolwill be introduced here.
often appear, leading to data loss.
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To keep data secure, you may choose to use the Windows inbuilt backup software Backup and Restore.
Details: The rig is not ready.
you could see an error code 0x81000031 on the screen.

This error occurs because you have added custom libraries that arent accessible when you perform a backup.
Custom libraries may be not available if these libraries are on removable media or an unavailable web link drive.
As a result, the computer cannot access them during the backup process.
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Well then, what should you do when you are plagued by the error code 0x81000031?
Find fixes from the following part now.
Windows 10 Backup not working?
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when unavailable custom libraries trigger the backup error 0x81000031.
Step 2: Right-select Libraries and chooseRestore default libraries.
This could delete any custom libraries you have created in your libraries location and restore the default ones.

you’re free to have a go at fix this issue by performing an SFC scan in Windows.
Do this in these steps:
Step 1: Run Command Prompt with admin rights via the search bar.
Step 2: Typesfc /scannowinto the CMD window and pressEnterto execute this command.
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Then, the SFC tool will scan the entire Windows operating system for corruption and replace corrupted system files.
In the CMD window, execute the commandchkdsk /f /r.
To avoid these issues or errors like error code 0x81000031, we recommend using a third-party backup program.
MiniTool ShadowMaker is one of the bestbackup software for Windows 11/10/8/7.
Importantly, it offers many powerful features to schedule your backups andback up only changed files& folders.
Want to create automatic file backups in Windows 10/11?
This post shows you how to automatically back up files to an external hard drive with ease.
Step 1: Download and install MiniTool ShadowMaker on your PC.
MiniTool ShadowMaker TrialClick to Download100%Clean & Safe
Step 2: Open this software and clickKeep Trialto continue.
Step 3: UnderBackup, choose the files you want to back up by clickingSOURCE > Folders and Files.
Step 4: Choose an external drive as a storage path.
Step 5: ClickBack Up Nowto start the data backup.
Is Windows 7 Backup and Restore blank or not opening?
To back up your PC well, you had better run a professional backup program like MiniTool ShadowMaker.